<template>
  <div class="min-h-screen bg-gray-100 text-gray-900 flex justify-center dowebok">
    <div class="max-w-screen-xl m-0 sm:m-20 bg-white shadow sm:rounded-lg flex justify-center flex-1">
      <div class="flex-1 bg-indigo-100 text-center hidden lg:flex">
        <div class="m-12 xl:m-16 w-full bg-contain bg-center bg-no-repeat bg-img"></div>
      </div>
      <div class="lg:w-1/2 xl:w-5/12 p-6 sm:p-12">
        <div class="mt-12 flex flex-col items-center">
          <h1 class="text-2xl xl:text-3xl font-extrabold" style="height: 90px;line-height: 45px;width:250px">
            {{ titleStr }}</h1>
          <div class="w-full flex-1 mt-8">
            <div class="text-center borderline">
              <div
                  class="leading-none px-2 inline-block text-sm text-gray-600 tracking-wide font-medium bg-white transform translate-y-1/2">
                请使用账号密码登录
              </div>
            </div>

            <div class="mx-auto max-w-xs">
              <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form" style="width: 100%">
                <el-form-item prop="username">
                  <el-input
                      class="login-input"
                      v-model="loginForm.username"
                      type="text"
                      auto-complete="off"
                      placeholder="账号"
                  >
                    <template #prefix>
                      <svg-icon icon-class="user" class="el-input__icon input-icon"/>
                    </template>
                  </el-input>
                </el-form-item>
                <el-form-item prop="password">
                  <el-input
                      class="login-input"
                      v-model="loginForm.password"
                      type="password"
                      auto-complete="off"
                      placeholder="密码"
                      @keyup.enter="handleLogin"
                  >
                    <template #prefix>
                      <svg-icon icon-class="password" class="el-input__icon input-icon"/>
                    </template>
                  </el-input>
                </el-form-item>
                <el-form-item prop="code" v-if="captchaEnabled">
                  <el-input
                      class="code-input"
                      v-model="loginForm.code"
                      auto-complete="off"
                      placeholder="验证码"
                      style="width: 63%"
                      @keyup.enter="handleLogin"
                  >
                    <template #prefix>
                      <svg-icon icon-class="validCode" class="el-input__icon input-icon"/>
                    </template>
                  </el-input>
                  <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img"/>
                  </div>
                </el-form-item>
                <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
                <el-form-item style="width:100%;">
                  <el-button
                      :loading="loading"
                      size="large"
                      type="primary"
                      style="width:100%;"
                      @click.prevent="handleLogin"
                  >
                    <span v-if="!loading">登 录</span>
                    <span v-else>登 录 中...</span>
                  </el-button>
                  <div style="float: right;" v-if="register">
                    <router-link class="link-type" :to="'/register'">立即注册</router-link>
                  </div>
                </el-form-item>
              </el-form>
            </div>
          </div>
        </div>
      </div>

    </div>
  </div>
</template>

<script setup>
import {getCodeImg} from "@/api/login";
import Cookies from "js-cookie";
import {encrypt, decrypt} from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'
import '@/assets/styles/tailwind.min.css'
import {getTitle} from '@/api/api'

const userStore = useUserStore()
const route = useRoute();
const router = useRouter();
const {proxy} = getCurrentInstance();

const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false,
  code: "",
  uuid: ""
});

const loginRules = {
  username: [{required: true, trigger: "blur", message: "请输入您的账号"}],
  password: [{required: true, trigger: "blur", message: "请输入您的密码"}],
  code: [{required: true, trigger: "change", message: "请输入验证码"}]
};

const titleStr = ref("");
const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

watch(route, (newRoute) => {
  redirect.value = newRoute.query && newRoute.query.redirect;
}, {immediate: true});

function handleLogin() {
  proxy.$refs.loginRef.validate(valid => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, {expires: 30});
        Cookies.set("password", encrypt(loginForm.value.password), {expires: 30});
        Cookies.set("rememberMe", loginForm.value.rememberMe, {expires: 30});
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore.login(loginForm.value).then(() => {
        const query = route.query;
        const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
          if (cur !== "redirect") {
            acc[cur] = query[cur];
          }
          return acc;
        }, {});
        router.push({path: redirect.value || "/", query: otherQueryParams});
      }).catch(() => {
        loading.value = false;
        // 重新获取验证码
        if (captchaEnabled.value) {
          getCode();
        }
      });
    }
  });
}

function getCode() {
  getCodeImg().then(res => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

document.title = '登录';
getTitle().then(res => {
  titleStr.value = res.data
})
getCode();
getCookie();
</script>

<style lang='scss' scoped>
.login-code {
  width: 33%;
  height: 40px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.login-code-img {
  height: 40px;
  padding-left: 12px;
}

.login-input {
  width: 318px !important;
}

.code-input {
  width: 200px !important;
}

::v-deep .el-input__wrapper {
  height: 53px !important;
  padding: 16px 32px;
  border-radius: .5rem;
}

.bg-img {
  background-image: url('@/assets/images/dowebok.svg');
}

.borderline {
  border-bottom: 1px solid #e2e8f0;
  margin-bottom: 3rem;
}
</style>
